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Better 60' on Toyo R888R on unprepped surfaces

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12 replies to this topic

#1
socalaviator

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So far my best is 1.8ish 60 foots. Traction is not the problem, bogging is.

So far I have tried OEM vacuum on launch with RPMs ranging from 3800rpm all the way up to 4500rpm with little to no difference. I have BOTL available on Ecutek and am willing to try a little less vacuum on the next attempts.

It's the bogging off the line that seems to be hurting me so far.
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RD Engineering. HKS GT1000 build.

#2
Turbotuner20v

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I'd try 3psi BOTL and 3,500 to 3,800rpm (if it's making the 3psi at those rpm)


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#3
Tim

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As what turbo said . I’d just start at adding Botl little by little til you get it dialed
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#4
droptopp

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As an A9 I ran just enough BOTL to not be in vacuum and 3600 was butter smooth. 1.6’s on an unprepped surface and 1.5’s with some prep.

Do you dry lunch it just to clean the tires off ?
GTX3582R built and tuned by STM, AMS 4.1, Omega billet crank, Alpha Cams, STM DP, MP, 4 STM Titanium custom exhaust, STM Race FMIC 22x18x4.5, full 3" piping, ID 2000, Sheptrans OneK drop gears, DS axles, E85, Advan GT 10/12 285/315 R888 / MT ET 18x10/12 TE37 Saga MT ET SS 275/245.
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#5
socalaviator

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I'd try 3psi BOTL and 3,500 to 3,800rpm (if it's making the 3psi at those rpm)

Ah ok.  Didn't think these tires could handle that much.  

So far I've tried 0.7 (in vacuum). I think 0.5 is OEM setting.  So basically ,so far I've tried two "notches" up from OEM vacuum setting on Ecutek.

 

How long should i hold the RPMs for once I hit target RPM?

As an A9 I ran just enough BOTL to not be in vacuum and 3600 was butter smooth. 1.6’s on an unprepped surface and 1.5’s with some prep.

Do you dry lunch it just to clean the tires off ?

Yeah I did clean off the tires.  If I can get a 1.6 I would be a happy camper.  That's all I'm aiming for. I will try your settings.


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#6
5ive

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until it builds the preffered boost watch the multigauge.

 

gruß,

Robert



#7
240Z TwinTurbo

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1.64 at the track with r888
0 psi & 3200rpm botl
70% wgdc 1st gear

2006 EVO IX (573hp/439tq @ wheels)

2009 GTR Premium (707hp/628tq @ wheels)

Built RB26 with no home (everything is for sale...lots of stuff)

Garrett V-band TwinScroll GTX35r Topmount Experiment
Garrett V-band TwinScroll GTX3576r, Curt Brown 10:1 2L, R2's, 110octane, 573hp/439tq


#8
Turbotuner20v

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Ah ok.  Didn't think these tires could handle that much.  

So far I've tried 0.7 (in vacuum). I think 0.5 is OEM setting.  So basically ,so far I've tried two "notches" up from OEM vacuum setting on Ecutek.

 

How long should i hold the RPMs for once I hit target RPM?

Yeah I did clean off the tires.  If I can get a 1.6 I would be a happy camper.  That's all I'm aiming for. I will try your settings.

 

It might be a little 'hot', but I'd rather spin than bog.  I think bogging is harder on the car and you can't get wheels speed data from the log to see how much it's spinning and dial the launch in.

 

Log front and rear wheel speed when you launch and look at the delta between the two.  A little bit of spin will help generate wheel speed and net a good 60'


Edited by Turbotuner20v, 18 October 2018 - 08:08 AM.


#9
socalaviator

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until it builds the preffered boost watch the multigauge.
 
gruß,
Robert


Got it. Thanks. So basically once it reaches target boost and/or vacuum for the launch. Let go?

  

1.64 at the track with r888
0 psi & 3200rpm botl
70% wgdc 1st gear

  

Would you recommend this setting on stock axles or too strong?

It might be a little 'hot', but I'd rather spin than bog.  I think bogging is harder on the car and you can't get wheels speed data from the log to see how much it's spinning and dial the launch in.
 
Log front and rear wheel speed when you launch and look at the delta between the two.  A little bit of spin will help generate wheel speed and net a good 60'


Ah! Something I never really thought about but makes so much sense. I've always been scared of wheel spin on this car with my new power due to abuse on the ETS but then again bogging might be hard on my stock axles. All I'm looking for is something in the 1.6 range. So far all my runs are 1.8-1.9 with nasty bogs.
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#10
240Z TwinTurbo

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Would you recommend this setting on stock axles or too strong?

 

I run this on stock everything with no issues and feel that lowering the launch rpm to 3200rpm with BOTL is easier on the drivetrain vs the standard 4200rpm No BOTL.  It's actually a very smooth launch compared to 4200rpm No BOTL with the main advantage being that you immediately hit boost so no delay like you have with No BOTL.  I did a bunch of logging comparing the two and hands down BOTL gave consistently better 60ft and 0-60mph.  I think I posted the data on the other forum.

 

As far as how much boost you run needs to be dialed in at the track, but even with the Xona Greens I can't typically handle anything higher than 0psi although I have tried launching at 3psi up to 5-6psi, which just roasts the tires because boost builds too quickly.


Edited by 240Z TwinTurbo, 19 October 2018 - 10:09 AM.

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2006 EVO IX (573hp/439tq @ wheels)

2009 GTR Premium (707hp/628tq @ wheels)

Built RB26 with no home (everything is for sale...lots of stuff)

Garrett V-band TwinScroll GTX35r Topmount Experiment
Garrett V-band TwinScroll GTX3576r, Curt Brown 10:1 2L, R2's, 110octane, 573hp/439tq


#11
socalaviator

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I run this on stock everything with no issues and feel that lowering the launch rpm to 3200rpm with BOTL is easier on the drivetrain vs the standard 4200rpm No BOTL.  It's actually a very smooth launch compared to 4200rpm No BOTL with the main advantage being that you immediately hit boost so no delay like you have with No BOTL.  I did a bunch of logging comparing the two and hands down BOTL gave consistently better 60ft and 0-60mph.  I think I posted the data on the other forum.
 
As far as how much boost you run needs to be dialed in at the track, but even with the Xona Greens I can't typically handle anything higher than 0psi although I have tried launching at 3psi up to 5-6psi, which just roasts the tires because boost builds too quickly.


Thanks for the advice to all the gents that chimed in.
I used BOTL (0.7 vacuum) and 3900rpm. First try of the day.
I got a 2.6 sec 0-60 and my personal best 1/4 mile of 9.34sec AND personal best 60' !

It spun all of 1st gear but it was the perfect kind of spin. Wheels spinning and car launching hard out of the hole!
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#12
240Z TwinTurbo

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Congrats and glad to hear!

If you can, lower WGDC in first gear to limit boost if you are fighting traction. I can’t run full boost in 1st as it just roasts the tires.

At the track I’ll play around with BOTL (0-3psi) as well as 1st gear WGDC. I usually start 0psi and 50% WGDC and work up depending on how the track is prepared.

Edited by 240Z TwinTurbo, 15 November 2018 - 08:27 PM.

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2006 EVO IX (573hp/439tq @ wheels)

2009 GTR Premium (707hp/628tq @ wheels)

Built RB26 with no home (everything is for sale...lots of stuff)

Garrett V-band TwinScroll GTX35r Topmount Experiment
Garrett V-band TwinScroll GTX3576r, Curt Brown 10:1 2L, R2's, 110octane, 573hp/439tq


#13
socalaviator

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Congrats and glad to hear!

If you can, lower WGDC in first gear to limit boost if you are fighting traction. I can’t run full boost in 1st as it just roasts the tires.

At the track I’ll play around with BOTL (0-3psi) as well as 1st gear WGDC. I usually start 0psi and 50% WGDC and work up depending on how the track is prepared.


Yes! My tuner has me running Boost-by-Gear. I'm currently running somewhere in the 19 to 20psi range in 1st gear. Boost increases in each gear until I get my full boost (29psi) in 4th gear.

So far, 1st gear is pretty much what the Toyos can take but we can definitely raise 2nd gear and above.
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